my trackday mk2 gti has 230k on its PB engine, its lasted 2 full track days so far, no engines troubles. the gearbox is another matter. if it makes it through the next one i'll be surprised, mileage is pretty irrelevant on things like brakes and suspension, as they will most likely have been changed atleast once. its smaller things like gearlinkages, stuff that isnt a regularly serviced item.
view and drive the car, easiest way.